Blower Door Test in Berlin borough, NJ

How Is A Blower Door Test Conducted?

In blower door test in Berlin borough, NJ, every exterior door and window is shut, while interior doors stay open to allow uniform airflow inside the building. An adjustable aluminum frame and sturdy fabric panel are installed in one central exterior door to prepare for testing. A calibrated fan is placed within the frame and operated to depressurize the structure to 50 Pascals — nearly the same as a 20 mph wind hitting the building.

As the fan exhausts indoor air, outside air starts seeping into the home through small leaks and gaps. Using a nanometer device, we assess how the pressure from the fan differs from the home’s natural air pressure. These results are transformed into air changes per hour (ACH), an indicator of the home’s airtightness and its efficiency in NJ conditions.

What Is A Passing Blower Door Test Score?

In Berlin borough, NJ, all new homes must comply with the 2015 International Energy Conservation Code (IECC) or more current codes enforced by local jurisdictions. Typically, blower door test compliance means maintaining 3 air changes per hour or less for energy-efficient performance. Complying with this benchmark during a blower door test in Berlin borough, NJ helps cut energy expenses and meet local building regulations.

Why Do I Need A Blower Door Test?

The State of NJ and numerous local municipalities adhere to the IECC (International Energy Conservation Code), which mandates blower door test for all newly built or renovated residential homes. Our experts assist home builders, contractors, and homeowners needing blower door test in Berlin borough, NJ to ensure compliance with energy codes and complete final permits. A duct leakage test can be required when ducts or HVAC components are installed outside the structure’s thermal envelope. Learn more about energy code compliance.

Homeowners see real value in blower door test in Berlin borough, NJ. As the fan draws air out, leaks become clear, making it easy to target repairs and improve efficiency. A blower door test usually takes just a few hours but delivers a long-lasting impact on your home’s comfort, performance, and efficiency—particularly during NJ’ hot summers and cool winters.

How To Pass A Blower Door Test:

• Anticipate potential air leaks before testing begins.
• Apply an air barrier like Tyvek or Zip Sheathing, making sure all connecting seams are properly taped and sealed.
• Apply insulation of the correct R-value and make sure it fits snugly in all areas of the building envelope.
• Seal all penetrations in exterior walls using caulk or spray foam.
• Ensure doors and windows are properly installed, caulked, and weather-sealed.
• Ensure all penetrations between conditioned and unconditioned areas—like attics, basements, and crawl spaces—are tightly sealed.
• Local building departments often supply a detailed checklist to ensure compliance — you can download the Philadelphia example here for guidance.
• Our professionals at Local Energy Audits use caulk, spray foam, and thermal imaging to detect and seal leaks on-site for better efficiency./li>
• In more than 90% of cases, we secure a passing score within two hours and deliver the paperwork needed to close the permit.